Hand sealer for containers



J.. coYLE HAND SEALER lFOR CONTAINERS Nov. 30, 1948.

3 Sheets-Sheet 1 Filed July 6, 1945 Nrov Mdm, ,n M JWM J. coYLE HAND SALER FOR CONTAINERS Nov. 3o,1948.

Filed July e, 194.5

3 Sheets-Sheet 2 INVENTOR.

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NMI- 30, 1948. J, QQYLE HAND $EALER Foa CONTAINERS sheets-spaans I Filed JulyV 6, 1945 JNVENToR. Coyle Patented Nov. 30, 1948 *U N :l TED S TATES 4PAT-EN T OFFICE HAND SEALER FOR CONTAINERS John Coyle, Baltimore, Md., assigner to Continental-Can Company, Inc., NewYork, N. Y., a

corporation of New York Application July 6, 1945 ,Ser"al N0. A603,549

(Cl. l11S-'221) 2 Claims.

1 The invention Vrelates tonew and useful 1inprovements in ahand operated sealergfo'r attach- .ing a closure cap to the nozzle of a container.

An Aobject of the invention is' to provide a hand sealer which can be supported on the container end in a centered position` relative to the nozzle to be closed, which hand sealer is provided with manually rotatable curling rollers -for attaching a closure cap tothe nozzle -of the container,

A further object of the invention is to provide Aa sealing head of the above type wherein a cam for controlling the curling rollers is manually operated.

These and other objects will in part be obvious and will in part be hereinafter more fully dis- 1 closed.

In the drawings,

Figure l is a side view of a hand sealer embodying the improvements, the hand sealer being shown as placedon a container for closing the same;

Figure 2 is a top plan view of the hand sealer and container;

Figure 3 is a sectional View on the line `3--3 ofFigure 2 showing the curlingrollers in their final position for securing the cap to the nozzle of the container;

Figure 4 is a View inpart similar tov Figure 3 but showing the curling.rollers.retracted`;

Figure '5 is a sectional View on the line '-Sfof Figure 4;

Figure 6 is .a sectional .View through a container nozzle showingaclosure cap vapplied thereto; and

Figure 7 is a sectional view through the closure cap and nozzle centrally through one of the tearing tabs.

The invention is directed particularly to a hand sealer for securing-a closure cap to the nozzle of a relatively large container wherein the nozzle is located adjacent the periphery of the container. The container, as illustrated in the drawings, is square in crosssection.

The container includes a body portion l to which anend `2 hasbeen secured by -a double seam 3. li preferably located near one corner of the container. This nozzle-isrolled outwardly into a hollow bead 5.

The container is sealed by a` closure cap which includes a body portion having a central depression 6 surrounded by a vertical wall l. This vertical wall 'l isdimensioned so as to t closely within the inner surface of the nozzle. The depression is of suicient depth sothat the bottom 8 thereof is below the hollow bead on the nozzle when the cap is in place. The. cap is alsoprovided with a depending skirt 9 which is spaced from the verticalwall' 'l soas to provide a. channel for a sealing compound I0. The skirt initially is .parallel with the vertical wall'l and is of a length The container vis provided with. a nozzle Attached to the sleeve 'ifscavcoller 133.

so thatit extends below the bead on the nozzle ,as indicated in vbroken lines in Figure 6. The

closure cap is placed on the nozzle and the sealingcompound brought into contact with the hollow bead, after which the skirt isv curled underneath thebead by curlingrollers to the position shown in Figure. This seals the container.

vThe closure cap `6 is provided with score lines H, Vll which extend from the outer edge ofthe skirt linto the bottom of the depression vand preferably `all the way across the cap. These score lines are parallel and set oil therebetween a tear strip l2. The tear strip is provided with tab extensions lZa at the ends thereof,

The closure. cap is'disclosed and claimed in my copending application Serial No. 606,117, filed July 20, 1945, and further description thereof is not thought necessary.

The present invention has to do with a hand vsealer for curling the skirt of the closurecap around the bead for the sealing iof the container. The handsealer includes a frame I3. This frame is more or less of a skeleton construction. It includes a base member i4 which is adapted rto rest on thedouble seam of the container. At

spaced intervals this base member I4 isprovided with depending members l5 which center the `sealing head on the container.

Mounted on the supporting frame is a sealing head which includes a chuck lli. This chuck is mounted at the lower end of a shaft I'l so that the chuck may remain stationary while the shaft is rotated. Mounted on this shaft is a head meinberl :which is secured to the shaft by a pin 19. Between the head member E8 and the chuck is a ballloearing 25. Also mounted on the shaft l'lvis a sleeve 2l. Attached to thesleeve is a handle 22. Said handle is splined to the i sleeve so that the sleeve may be rotated by means of the handle. This sleeve is secured to the shaft il by means of a pin 23 carried by the shaft and engaging. in ,elongated slot 24 in the sleeve.

Mounted on .the head IB are a plurality of levers 25. These levers are pivoted to the head i3 yby pivot `pins 26. Each lever carries a curling rolle-11.27 .providedwith a curling groove 28. A

spring 2li associated 4with each leverservesto move the curling rollers outwardly away from Mthe chuck E6. yA cam .30 carried at the lower end The sleeve 3 2i is mounted for rotation in a bushing 34 carried by the frame Ai 3.

A hand operated lever 39 is pivoted at 36 to the frame I3 and this lever carries pins 31 which eXtend into an annular groove 38 in the collar 33.

lThe lever 35 is raised by means of Va spring 39. After a cap has been placed on the nozzle,

then the sealing head is placed on the can end and the members l5 on the sealing head base will center the chuck I6 relative to the nozzle so that the chuck will extend into the depression 6 in the closure cap. The operator then grasps the handle part 133 of the main frame and the lever 35 and moves the lever downwardly toward the frame. This will move the sleeve 2i downwardly through the connection of the lever to the collar 33. The downward movement of the sleeve will cause the cam 30 to engage the levers supporting the curling rollers. cam moves the curling rollers into engagement with the skirt of the closure cap, the sleeve 2l and the shaft I7 are rotated through the aid of the handle member 22. This does not rotate the -chuck but it does rotate the sealing head I8 and springs will raise the lever and the cam and cause the rollers to move away from the closure cap so that the sealer can be removed from the container.

When it is desired to open a container then thevtear strip is removed and this will release the vremaining sections of the cap so that they may be readily moved radially to release the grip of vthe .curled skirt on the bead. The closure .capthus can be removed without in any way disturbing the bead on the nozzle.

The provision of a hollow bead on the nozzle j readily adapts this sealing means to reclosure of the container. When it is desired to reclose the container a new sealing cap is placed thereon and the sealing head applied and, inasmuch as the hollow bead has not been disturbed in any way in the removal of the cap, the skirt may be curled into tight engagement with the bead on the nozzle. During the first operation of sealing the container the bead may be contracted somewhat due to the pressure of the curling rollers and may remain in the contracted position. This does not interfere with the forming of a tight curling rollers are moved into engagement with the skirt of the closure cap by the hand operated lever and it can be moved downwardly until a tight seal is accomplished.

It is obvious that many changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

I claim: v

1. A hand sealer for container closures comprising a supporting trarne adapted to rest on the end seam of a container having a nozzle, means carried by the frame for preventing lateral movement thereof on the end seam, said frame having a bearing centered directly over the nozzle of the container, a sleeve mounted in said bearing for At the lsame time that this seal for the reclosure for the reason that the rotation and for endwise movement, a crank attached to the sleeve for rotating the same, a hand operatedlever pivoted to the frame and connected to the sleeve for moving said sleeve endwise, a shaft mounted in said sleeve and means for connecting the shaft to the sleeve whereby the shaft is rotated with the sleeve and the sleeve is permitted to move endwise of the shaft, a sealing head mounted on said shaft and rotatable therewith, a chuck carried by the shaft and sealing head so that the shaft and head may rotate realtive to the chuck, a plurality of sean-ling levers carried by said head, curling rollers carried by said levers, springs associated with the levers for moving the curling rollers radially outwardly away from the chuck, and a control cam carried at the lower end of said sleeve and adapted to engage the upper ends of said levers for moving the curling rollers inwardly toward the chuck.

2. A hand sealer for container closures comprising a supporting frame adapted to rest on the end seam of a container having a nozzle, means carried by the frame for preventing lateral movement thereof on the end seam, said frame having a bearing -centered directly over the nozzle of the container, a sleeve mounted in said bearing for rotation and for endwise movement, a crank attached to the sleeve for rotating the same, a hand operated lever'pivoted to the frame and connected to the sleeve for moving said sleeve endwise, a shaft mounted in said sleeve and means for connecting the shaft to the sleeve whereby the shaft is rotated with the sleeve and the sleeve is permitted to move endwise of the shaft, a sealing head mounted on said shaft and rotatable therewith, a lchuck carried by the shaft and sealing head so that the shaft and head may rotate relative to the chuck, a plurality of seeming levers carried by said head, curling rollers carried by said levers, springs associated with the levers for moving the curling rollers radially outwardly away from the chuck, a control cam carried at the lower end of said sleeve and adapted to engage the upper ends of said levers for kmoving the curling rollers inwardly toward the chuck, and yielding means adapted to move the cam away from the seaming levers when the hand operated lever is released.

' JOHN COYLE.

REFERENCES CITED UNTED STATES PATENTS Number Name Date 521,895 Roberts June 26, 1894 583,184 Kutzner et al May 25, 1897 797,862 Mendham Aug. 22, 1905 926,591 Odquist et al. June 29, 1909 1,124,553 Sumner et al. Jan. 12, 1915 1,453,212 Tornquist Apr. 24, 1923 1,460,398 Augensen July 3, 1923 1,490,339 Newman Apr. 15, 1924 1,497,830 Armato June 17, 1924 1,647,687 Coyle Nov, 1, 1927 1,679,676 Miele Aug. 7, 1928 1,744,487 Miller Jan. 21, 1930 1,744,661 Nelson Jan. 21, 1930 2,192,502 Newman Mar. 5, 1940 FOREIGN PATENTS Number Country Date 'A 416,453 France Aug. 8, 1910 

